EP 1192233 A1 20020403 - POLYMER COMPOSITIONS
Title (en)
POLYMER COMPOSITIONS
Title (de)
POLYMERZUSAMMENSETZUNG
Title (fr)
COMPOSITIONS POLYMERIQUES
Publication
Application
Priority
- US 0013727 W 20000519
- US 31652799 A 19990521
- US 16578999 P 19991116
Abstract (en)
[origin: WO0071635A1] Novel polymer compositions are disclosed, along with their use as well service fluids, for example as completion fluids, work-over fluids or drilling fluids, comprising water soluble copolymers having sulfonate groups and carboxylate groups, along with alkali metal salts of carboxylic acid. Exemplary copolymer has 5 to 95 wt.% structural units derived from 2-acrylamido-2-methylpropanesulfonic acid or salt thereof, and 5 to 95 wt.% structural units derived from acrylic acid or salt thereof. A salt of polymer may be used, such as the sodium, potassium, ammonium and calcium salts. Exemplary alkali metal salts of the polymer composition include sodium, potassium and cesium salts of formic acid and/or acetic acid in amounts suitable to develop high temperature viscosity suitable for such well servicing fluids. The polymer composition is hydratable/soluble in a brine of sodium and/or potassium and/or cesium salts of formic and/or acetic acid.
IPC 1-7
IPC 8 full level
C09K 8/04 (2006.01); C08K 5/098 (2006.01); C08L 33/24 (2006.01); C09K 8/12 (2006.01)
CPC (source: EP US)
C08K 5/098 (2013.01 - EP US); C09K 8/12 (2013.01 - EP US)
Citation (search report)
See references of WO 0071635A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0071635 A1 20001130; AR 030020 A1 20030813; AU 5028700 A 20001212; AU 779992 B2 20050224; CA 2374486 A1 20001130; EP 1192233 A1 20020403; MX PA01011906 A 20020820; NO 20015658 D0 20011120; NO 20015658 L 20020117; US 2005130846 A1 20050616; US 6656989 B1 20031202
DOCDB simple family (application)
US 0013727 W 20000519; AR P000102431 A 20000519; AU 5028700 A 20000519; CA 2374486 A 20000519; EP 00932588 A 20000519; MX PA01011906 A 20000519; NO 20015658 A 20011120; US 57489600 A 20000519; US 71454803 A 20031114